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Part of our Puramic line!
The Black Boulder is perfect for those of us who need an extra-large travel bottle for both hot and cold drinks! It's a 2 in 1 insulated, double-walled stainless steel travel companion with a dual-functioning leak-proof lid — featuring a built-in flip up straw for cold drinks, and a flip-open hot sip lid for coffee or tea. Combine all that with a Puramic™ finish and easy carry strap for the perfect take on the go bottle.